GM Service Manual Online
For 1990-2009 cars only

ECM Power and Ground,Serial Data, Malfunction Indicator Control

Engine Control Module (ECM) Power, Ground, Serial Data, MIL


Object Number: 1257037  Size: FS
Master Electrical Component List
ECT, TP, MAP, IAT Sensors
Fuse Block - Underhood Bussing (1 of 2)
A/C, IP BATT Fuses, I/P Fuse Block, RADIO, CRUISE, AUTO A/C CLSTR, DLC Fuses
A/C, IP BATT Fuses, I/P Fuse Block, RADIO, CRUISE, AUTO A/C CLSTR, DLC Fuses
IGN 1, Fuse, Ignition Switch, I/P Fuse Block, - LTR, HTD SEAT, CLK, RADIO, AIR BAG, BCK/UP, CRUISE, ECM Fuses
Fuel Pump Relay, FUEL, ECM Fuses
G103 (2.0L MR140)
DLC Schematics
G103 (2.0L MR140)